There are several sets of benchmark designs which can be used with VTR.

VTR Benchmarks

The VTR benchmarks [RLY+12][LAK+14] are a set of medium-sized benchmarks included with VTR. They are fully compatible with the full VTR flow. They are suitable for FPGA architecture research and medium-scale CAD research.

Table 1 The VTR 7.0 Benchmarks.
Benchmark Domain
bgm Finance
blob_merge Image Processing
boundtop Ray Tracing
ch_intrinsics Memory Init
diffeq1 Math
diffeq2 Math
LU8PEEng Math
LU32PEEng Math
mcml Medical Physics
mkDelayWorker32B Packet Processing
mkPktMerge Packet Processing
mkSMAdapter4B Packet Processing
or1200 Soft Processor
raygentop Ray Tracing
sha Cryptography
stereovision0 Computer Vision
stereovision1 Computer Vision
stereovision2 Computer Vision
stereovision3 Computer Vision

The VTR benchmarks are provided as Verilog under:


This provides full flexibility to modify and change how the designs are implemented (including the creation of new netlist primitives).

The VTR benchmarks are also included as pre-synthesized BLIF files under:


Titan Benchmarks

The Titan benchmarks [MWL+13][MWL+15] are a set of large modern FPGA benchmarks. The pre-synthesized versions of these benchmarks are compatible with recent versions of VPR.

The Titan benchmarks are suitable for large-scale FPGA CAD research, and FPGA architecture research which does not require synthesizing new netlist primitives.


The Titan benchmarks are not included with the VTR release (due to their size). However they can be downloaded and extracted by running make get_titan_benchmarks from the root of the VTR tree. They can also be downloaded manually.

MCNC20 Benchmarks

The MCNC benchmarks [Yan91] are a set of small and old (circa 1991) benchmarks. They consist primarily of logic (i.e. LUTs) with few registers and no hard blocks.


The MCNC20 benchmarks are not recommended for modern FPGA CAD and architecture research. Their small size and design style (e.g. few registers, no hard blocks) make them unrepresentative of modern FPGA usage. This can lead to misleading CAD and/or architecture conclusions.

The MCNC20 benchmarks included with VTR are available as .blif files under:


The versions used in the VPR 4.3 release, which were mapped to \(K\)-input look-up tables using FlowMap [CD94], are available under:


where \(K=\) <#>.

Table 2 The MCNC20 benchmarks.
Benchmark Approximate Number of Netlist Primitives
alu4 934
apex2 1116
apex4 916
bigkey 1561
clma 3754
des 1199
diffeq 1410
dsip 1559
elliptic 3535
ex1010 2669
ex5p 824
frisc 3291
misex3 842
pdc 2879
s298 732
s38417 4888
s38584.1 4726
seq 1041
spla 2278
tseng 1583